あなたの義務は家族を養うことです。

you (referring to someone of equal or lower status); dear (what a wife calls a husband)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

duty; obligation; responsibility

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

family; members of a family

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to support; to maintain; to provide for; to bring up; to raise; to rear; to feed; to adopt (a child); to cultivate (a habit, a quality, etc.); to develop; to build up; to recuperate (from injury, illness, etc.)

thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as

be; is